/*.aa {*/
/*    width: 200px;*/
/*    height: 200px;*/
/*    border: 1px solid rebeccapurple;*/
/*}*/
/*元素选择器*/
/*div{*/
/*    width: 200px;*/
/*    height: 200px;*/
/*    border: 1px solid rebeccapurple;*/
/*}*/
/*后代选择器*/
/*body div{*/
/*    width: 200px;*/
/*    height: 200px;*/
/*    border: 1px solid rebeccapurple;*/
/*}*/
/*自带选择器*/
/*body > div {*/
/*    width: 200px;*/
/*    height: 200px;*/
/*    border: 1px solid rebeccapurple;*/
/*}*/
/*组合选择器*/
/*body>div:nth-child(2),body>div:nth-child(3){*/
/*    width: 200px;*/
/*    height: 200px;*/
/*    border: 1px solid rebeccapurple;*/
/*}*/
/*兄弟选择器*/
/*body > div:nth-child(1) + div {*/
/*    width: 200px;*/
/*    height: 200px;*/
/*    border: 1px solid rebeccapurple;*/
/*}*/
/*属性选择器
*代表所有元素  通配符
*/
/*body > div {*/
/*    width: 200px;*/
/*    height: 200px;*/
/*    border: 1px solid rebeccapurple;*/
/*}*/

/*body > div:nth-child(2) {*/
/*    margin: 10px;*/
/*    border-radius: 0 25px 25px 0;*/
/*    !*border-bottom: 1px solid rebeccapurple;*!*/
/*}*/

/*body > div:nth-child(2) > div {*/
/*    border-width: 100px 200px;*/
/*    border-style: solid;*/
/*    !*border: 100px solid rebeccapurple;*!*/
/*    border-color: transparent transparent blue transparent;*/
/*}*/
* {
    margin: 0;
}

body {

    display: flex;
    justify-content: center;
}

body > div {
    width: 900px;
    /*border: 1px solid blue;*/
}

.top > div {

    display: flex;
    justify-content: center;
}

.top > div > div {
    width: 800px;
    /*border: 1px solid red;*/

}

.top {
    color: white;
    background-image: url("../img/banner_qtah.jpg");
    /*width: 800px;*/
    /*800*/
    /*1920/800 */
    /*808/(1920/800) */
    height: 500px;
    background-size: 100% 100%;
}

/*---------------公司信息-------------*/
.top > div:nth-child(1) > div:nth-child(1) {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top > div:nth-child(1) > div:nth-child(1) > div:nth-child(2) {
    display: flex;
    align-items: center;
}

.top > div:nth-child(1) > div:nth-child(1) > div:nth-child(1) {
    height: 141px;
    width: 204px;
}

.top > div:nth-child(1) > div:nth-child(1) > div:nth-child(1) img {
    width: 100%;
    height: 100%;
}

.top > div:nth-child(1) > div:nth-child(1) > div:nth-child(2) > div:nth-child(1) {
    width: 30px;
    height: 30px;
    margin-right: 10px;
}

.top > div:nth-child(1) > div:nth-child(1) > div:nth-child(2) > div:nth-child(1) img {
    width: 100%;
    height: 100%;
}

/*----------------------------导航--------------------------*/
.top > div:nth-child(2) {
    background-color: #E59037;
    height: 50px;
}

.top > div:nth-child(2) > div {
    display: flex;
    align-items: center;
}

.top > div:nth-child(2) > div > div {
    /*margin: 0 20px;*/
    cursor: pointer;
    height: 50px;
    line-height: 50px;
    padding: 0 20px;
}

/*鼠标移动上去的事件*/
.top > div:nth-child(2) > div > div:hover {
    color: #E59037;
    background-color: white;
}


/*--------------广告--------------------*/
.top > div:nth-child(3) > div > div:nth-child(1) {
    padding: 30px 0 0 0;
    font-size: 40px;
}

.top > div:nth-child(3) > div > div:nth-child(2) > div {
    font-size: 10px;
    line-height: 20px;
}

.top > div:nth-child(3) > div > div:nth-child(3) {
    color: #E59037;
    font-size: 30px;
}

.top > div:nth-child(3) > div > div:nth-child(3) > div:nth-child(1) {
    display: flex;
    align-items: flex-end;
}

/*even偶数 odd奇数*/
.top > div:nth-child(3) > div > div:nth-child(3) > div:nth-child(1) > div:nth-child(odd) {
    color: white;
    font-size: 15px;
}

.top > div:nth-child(3) > div > div:nth-child(3) > div:nth-child(2) {
    /*margin-left: 30px;*/
    text-indent: 1.5em;
}
/*-----------------公共部分css----------------------------------*/

/*----------标题---------*/
.title {
    padding: 10px;
    color: #E59037;
    font-size: 25px;

}
.middle {
    display: flex;
    justify-content: center;
}

.middle > div {
    width: 800px;
    margin: 50px 0;
}

